Metal construction



King of England, and

Metal' Construction,

AvrUNITED STATES PATENT o'FFicE.

mismor ,JOSEPH MooNEY ANnDoNALb 'HENRY EMBY, or LoNDoN, ENGLAND.

vME'LAL CONSTRUCTION.

To aZZ whom 'it may concern.'

Beit known that we, DEnMo'r J. MooNnY and DONALD H. EMBY, both subjects ofthe residents of London, England, have invented a new and Improved of .which the following is a full, clear, andexact description.

This inventionrelates to improvements in articularly to an improved construction o spar, lo

or the like, for use in .airship conlike device .which is comthin sheet plates of an ar embodying the minimum of weight.

With these and other objects in view the invention consists in certain novel features` of construction,

and combinations and arrangements of parts, as will be more fully hereinafter described and pointedA out in ythe claims. v A

'In the accompanying drawings- Figure 1 is a fragmentary perspective view illustrating one form of our invention; Figs. 2, 3, 4, 5, 6, 7 K and 8 are similar views illustrating modifications; and

Fig. 9 is a fragmentary view illustrating a modified form of corner construction.

With all forms-of our invention we em -a pair of oppositely positioned plates the web of the spar; Flanges 5and the pl tesj 4 constituting ,the ilanges of In all noted that-the plates 1 and 2 are spaced ige and these plates 3 vand 4. and the extreme ed es' of the flanges 5 are 'curved or bent inwar y with the ed es ofthe platesronfinin -the edges of t' e `flanges so that thesev ouble thicknesses of 4metal which constitute Speoioation of Letters I Patent.

Application mea 'January 14, 1920.

'structure is preci forms df'our .invention it lwill be the iianges of theY Serial No. 851,392.

spar, have inwardly bent strengthening lips 6 throughout their edges. The plates 1 and 2 shown in Fig. 1 arecurved or bulged outwardly at their intermediate ortions, as shown at 7, and between said intermediate portions, and the flanges 5 are corrugated as shown at 8.

In the modification illustrated in Fig. 2, the plates 1 and 2 are bul ed or curved inwardly at their interme iate portions, as shown at 9, and the 'anges 10 corresponding to the ianges 5 of Fig. 1 and the edges of the plates 1 and 2 are curved so that the ianges ofthe girder formed by the two thicknesses of metal arev curved inthe arc of a circle and are not flat as in Fig. 1.

In the modification illustrated in Fig. 3, the plates 1 and 2 are relatively strai ht with corrugated portions or webs 11 a jacent their upper andv lower edges, and the flanges 12 at the edges of the plates 1 and 2 are flat and are secured to the plates 3 and4. Wewould have it understood 'that we do not limit ourselves to any particular means for securing the several p ates together as we may employ rivets, or spot welding as a securing means, or any other securingmeans may be employed that is adapted for the purpose. 'c

In' the modification illustrated in. Fig. 4, the plates 1 and 2 are corrugated throughout -heir width and in other respects this .n Fig. 5 we illustrate a modification in which the plates 1 and 2 are of sli htly diff'erent'shape from that shown in the general idea of corruga ion is carried out and .the construction of flange is emloyed with the addition of filler lpieces 13 inter osed between the plates 3 and 4 and the pates 1 and 2 at'the flanged portions of the spar or girder.

Also in this modification we show bolts 14 connecting the plates 1 and 2 and having tion 'of the` fact that the langes 16 arestraight and Patented Nov. 3o, 1920.

sely like'that shown in' spacing sleeves 15 on the Abolts between the plates to stiften the sparv respects the structure is llike that shown in z n Fig. 8 we illustrate a modification in which the side plates 1 and 2 are of open-` work skeleton form and having laterally projecting flanges 20 at vertical portions of the skeleton plate to form reinforcedv standar s.

In Fig. 9 we illustrate a fragment of one corner of the beam structure which shows an v.incline at 21 instead of the vertical or several figures which f straightportion of the indicates that the beam may be thus shaped at the corners, if desired.

As above stated, in all forms of .our invention, we employ' channel side platesto form the web of the sparlor girder with the flanges and the channels projecting out-y wardly and secured to the upper and lower plates so vthat a box irder construction is formed which is relat vely light and yet embodies the maximum of strength and the several plates may be variously strengthened by such curvature,i angles or corruga. tions as may be deemed desirable and as 1ndicated inthe several figures of the drawin s.

. arious other slight changes may be made the general form andarrangement of parts described without departing from the invention, and hence we do lnot limit ourselves to the precise details set forth, but consider'ourselves at libert to make such changes and alterations as airly fall lwithin the spirit and claims.

1. A metal bar construction of the character described, comprising .channel plates spaced apart and forming the web of the bar, platesat the edges of the web covering the outer faces of of the first-mentioned plates, and said lastmentioned plates having inwardly bent portions located back of I`the web portions of the first-mentioned channel plates and spacing said channels apart.

2. A metal bar construction of the character described, comprising channel plates spaced apartJ and forming a web of the bar, plates at the edges of the web covering the outer faces of and the first-mentioned` plates, and said lastmentioned plates having outwardly curved intermediate portions and' inwardly projectedy portions at the edges of the curved portions, said inwardly projecting portions forming a backing or reinforcement against the inner faces of the channel plates.

3f. A metal bar construction of the character described, comprising channel plates spaced apart and forming the web of the bar, plates at the edges of the web covering the outer faces of and secured to the flanges of the first-mentioned plates, said last-mentioned plates having outwardly curved intermediate portions and inwardly projected portions at the edges of the curved portions, said inwardly forming a backing or reinforcement against the inn'er'faces of the channel plates, and said channelplates having' longitudinal corrugations.

V DERMOT JOSEPH'MOONEY. DONALD HENRY EMBY. l

scope of the appended and secured to the flangessecured toothe flanges of' projecting portions 

